Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources) on project Springboot_03_web: Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources failed.

Solution:

Modify the springboot configuration file, if it is application.yaml, modify it to application.yml and it can start normally!